제4회 한국IBM과 함께하는 난공불락 오픈소스 인프라 세미나-Ranchers

1. 난공불락 세미나
2017. 05.25

2. Rancher for Continuous Delivery
DevOps Korea Group
이미지 출처: http://www.swanlandco.com/properties/sun-river-ranch
Ralf Yang

3. Intro…
DevOps Korea Group

4. Speaker
• Ralf Yang = DevOps, Technical Architect
• Since 2004 ~
- Startup company System Engineer
- NHN Services Operations
- Yahoo! Korea Service Engineer
- EstSoft, Zum.com System Admin
- Dell international Enterprise Tech. Support Sr. Analyst
- GS SHOP Technical Architect
- code post (현)
http://ralfyang.com

5. Speaker
• 활동
- Open-source committer:
• Zinst, Zinst packages, Cloud-dashboard, Docker-Cli-Dashboard etc.
• https://zinst.me
- FaceBook DevOps Korea Group Admin
• https://www.devopskorea.com
- With Monty: Father of MySQL - - With Joshua: God Father of OpenStack - - With Patrick McGarry: Director of Ceph Community -

6. Tools
-준비물
•VirtualBox
•Vagrant
•Docker
- Docker-compose
•Rancher
- Cattle
•Git
•Docker Cli-dashboard
http://zinst.me

7. Rancher 기반의 Container Orchestration
DevOps Korea Group

8. Docker ?
•LXC(Linux Container)
- Host server의 Kernel을 공유 -> 별도의 Booting 과정이 없다
- Docker-image를 online registry(Repository 개념)에서 바로 받아 올 수 있다
•Default registry: hub.docker.com
•private registry: ex) private.registry.ralfyang.com/centos:6.5
- Docker image 내부에 독집적인(isolated) Runtime 환경을 별도로 만들어서 전달 할 수 있다

9. Docker-compose ?
•Docker compose ? : Provisioning set file for docker container
•ex) https://github.com/goody80/SolrCloud_docker_compose
이미지 출처: https://blog.docker.com/media/2015/11/logo-title-final-compose-2b.png

10. Docker Cli-Dashboard
•DCS
•https://github.com/goody80/docker_cli_dashboard

11. Rancher Test 환경 구축 하기: Vagrant + VirtualBox
•Manual
•https://github.com/goody80/vagrant_rancher_cluster
•Virtual Box install
•https://www.virtualbox.org/wiki/Downloads
•Vagrant install
•https://www.vagrantup.com/downloads.html
•Box(Virtual Machine OS image) add
•$] vagrant box add ubuntu1404 https://cloud-images.ubuntu.com/vagrant/trusty/current/
trusty-server-cloudimg-amd64-vagrant-disk1.box
•Source Pull
•$] git clone https://github.com/goody80/vagrant_rancher_cluster.git

12. Vagrant 이해하기
•Vagrantfile
•Vagrant file구조
i 값은 0~9까지, 10개의 instance가 hostname을 기반으로 생성되는 영역
ex) vagrant up vmhost01 && vagrant up vmhost02
vagrant up rancher 라고 입력 했을 시 사용되는 영역
vagrant default setting
Github: https://github.com/goody80/vagrant_rancher_cluster

13. Vagrant 이해하기
•Provisioning script review
Github: https://github.com/goody80/vagrant_rancher_cluster

14. Vagrant 이해하기
•Provisioning script review: default_setting.sh
Github: https://github.com/goody80/vagrant_rancher_cluster

15. Vagrant 이해하기
•Provisioning script review: rancher.sh
Github: https://github.com/goody80/vagrant_rancher_cluster

16. Vagrant 이해하기
•Provisioning script review: vmhost.sh
Github: https://github.com/goody80/vagrant_rancher_cluster

17. Vagrant 사용하기
•VM create by Vagrant provisioning
-$] cd vagrant_rancher_cluster; vagrant up rancher
Github: https://github.com/goody80/vagrant_rancher_cluster

18. VM Provisioning - Video
Youtube link : https://youtu.be/cFy8KAStkq8

19. Rancher server 시작하기
•vagrant ssh rancher
•Rancher server install:
- https://docs.rancher.com/rancher/v1.5/en/installing-rancher/installing-server
-mkdir /vagrant/rancher_db; sudo docker run -d -v /vagrant/rancher_db/mysql/:/var/lib/mysql --
restart=unless-stopped -p 8080:8080 rancher/server
•http://localhost:8080

20. Rancher 둘러보기

29. Rancher startup - Video
Youtube link : https://youtu.be/iYom-g3CUgY

30. Rancher Host server provisioning
•VM create by Vagrant provisioning
-$] cd vagrant_rancher_cluster; vagrant up vmhost01

31. Rancher Host server provisioning
Youtube link : https://youtu.be/MSPWbT7Tblo
-$] cd vagrant_rancher_cluster; vagrant up vmhost01

32. Rancher Host pool 추가하기
Youtube link : https://youtu.be/QCWK_QqYAjA

33. Rancher system infra 자동 설치
Youtube link : https://youtu.be/OA122SgTLUo

34. Rancher Host pool 하나 더! 추가하기
Youtube link : https://youtu.be/2fI2zVkd_lg

35. Admin 계정 설정 & Catalog를 통한 Service 생성하기
Youtube link : https://youtu.be/rRRor2lq5yo

36. Docker-compose를 통한 Service Stack 생성하기
Youtube link : https://youtu.be/LssSF7-Borc

37. Load-Balancer 적용하기
Youtube link : https://youtu.be/JPk46spMQdU

38. Hands on
•Provisioning by Docker-compose
•vagrant ssh vmhost01
•$] sudo -i
•$] cd /data/source; git clone https://github.com/goody80/docker-elk
•Stack add by docker-compose.yml
•Make a Load-Balancing group
•Try to scale-up

39. Tips
•Rancher server-HA
•http://docs.rancher.com/rancher/v1.4/en/installing-rancher/installing-server/#multi-nodes
•Script for HA setting
•https://github.com/goody80/rancher_server_ctl/blob/master/rancher-ha
•Manual Upgrade
•https://docs.rancher.com/rancher/v1.5/en/upgrading/#single-container
•RELEASING THE DATABASE LOCK
•https://docs.rancher.com/rancher/v1.1/en/faqs/server/#databaselock

40. 쉬어가는 페이지

41. Rancher 기반의 Continuous Delivery
DevOps Korea Group

42. Dev. Staging Production
CI/CD 진행방향 예시
https://en.wikipedia.org/wiki/Continuous_delivery
2 cycle
(Staging)
1 cycle
(Dev.)
Artifact
3 cycle
(Staging)
Artifact

43. Developer
(Requester)
I Need a
Wordpress!
DevOps
for CD
OK, Hold on..
Find a base image for
wordpress
- rhel-wordpress-html-embed
- rhel-mysql-4gb
Docker registry
Docker run
Host
rhel-wordpress-html-embed
rhel-mysql-4gb
Host
rhel-wordpress-html-embed
rhel-mysql-4gb
Host
haproxy
haproxy
Logstash
Host
Elastic Search
Kibana
logspout logspout
BCP
Load balancing
HA
Service On
Log collector
Agent for
event stream log
Log gathering
ELK Metric
Dashboard
cAdvisor
cAdvisor
cAdvisor cAdvisor
Requirement for Container Automation:
- Scale out/in
- Rolling upgrade
- Security
- Volume mount
- Backup
- Service discovery
- Load balancing
- Routing
컨테이너 기반의 Service Delivery 체계 구축 예시

44. Bakery for Base-image
Docker Base image build pipeline

45. Bakery for CI
Docker Base image + Source build pipeline
Source Build automation Part

46. 12factor
•https://12factor.net/ko/
•https://12factor.net
•Disposability

47. Continues Delivery를 왜 해야 하는가? (1/2)
-배포 업무 성숙도 향상
•무중단 배포 -> 지속적인 배포 -> 빠른 개발 빠른 출시
•Dev. = Stage = Production -> 충분한 테스트 -> 배포에 따른 문제 최소화
•Human error 예방
-전략적 배포 기법
•Canary release -> Soft-landing
•Blue/green deployment
•AB Test -> UX -> Service 만족도 향상
Blue-green Deployments, A/B Testing, and Canary Releases:
http://blog.christianposta.com/deploy/blue-green-deployments-a-b-testing-and-canary-releases/

48. Continues Delivery를 왜 해야 하는가? (2/2)
-장애대응
•빠르고 정확한 장애진단 및 복구
-서비스 상황 대응
•Scale-out/in
•빠르고 정확한 롤백
-보안
•네트워크 분리
•접근제어

49. 쉬어가는 페이지

50. QnA

51. 감사합니다 :)